The purpose of this circuit, which we found in the November 1986 Radio Electronics issue, is to determine the voltage across a zener diode. Several test currents can be selected.
This circuit was found in a 1967 Japanese documentation. It consists of a touch control system with...
This amplifier with complementary symmetry output and good sound quality was found in...
The commercial MT2B receiver manufactured in Japan in the 1960s had a listening device only and...